A.Application
This equipment is used in the production of PP/PE nonwoven fiber thermobond forming process.
B.Technical Parameter
1. Main specification
1.1Processing material:PP/PE spunbond nonwoven.
1.2Finished width:2400mm.
1.3Roller width:2800mm.
1.4GSM:10-150g/㎡.
1.5Technical route:nonwoven feeding in-double hot rolling -output(input and output device provided by customer)
1.6Type:two rollers vertical,the top one is pattern roller, the bottom one is plain roller.
1.7Working speed: 15-300m/min.
1.8Max linear pressure among rollers: 120N/mm.
1.9Hot roller max temperature≤170℃.
1.10Installed power:210KW.
1.11 Size:about 1150x6240x2538(mm).
1.12 Surface coating:high quality plastic painting,overall RAL7035.
2.Part parameters of the main frame
2.1 Main machine frame: It is made of 60mm thick integral steel plate CNC blanking, and then processed by CNC machining center. Both sides of the frame are made of heavy-duty H-beam and rectangular steel links, which have stronger bearing pressure and higher precision of machining products.
2.2 Frame structure: U-shaped structure, top surface disassembly type.
3.Components parameters of hot calender rollers
3.1 Roll specifications: φ480×2850.
3.2 Roll material: high-quality alloy steel forgings.
3.3 The hardness of the top roller: HRC56-58.
3.5 Hardness of the bottom roller: HRC58-60.
3.6 Equipped with a cross adjustment device.
3.7 Roller cross adjustment range: ±30mm.
3.8 Cross adjustment method: electric adjustment, using motor reducer + displacement sensor, digital display on the operation interface.
3.9 Roll bearing: Chinese brand.
3.10 Bearing cooling method: thin oil circulating cooling and setting bearing over temperature alarm.
3.12 Seals: high temperature fluorine rubber skeleton seal.
3.13 Rotary joint: adopt graphite plane seal, and adapt to metal hose and valve.
4. Output fabric cooling system
4.1 Cooling method: After hot rolling, two cooling rollers cool the surface of the non-woven fabric.
4.2 Cooling roller specifications: φ295mm.
4.3 Cooling roller transmission mode: independent transmission, transmission power 4kw frequency conversion control.
5. Transmission system
5.1 Roller drive: One roller and one machine hard-toothed gearbox drive, AC frequency conversion speed regulation, transmission power 22kw×2=44kw.
6. Heating system:
6.1 Heating method: heating by conduction oil circulation.
6.2 Heat supply method of heat conduction oil: the heat conduction oil is heated by the electric heating pipe and then delivered to the roll by the heat pump for circulating heating. The temperature control circulation system includes a small circulating heat conduction oil pump and related pipelines, SCR temperature control components and temperature control instruments, etc.
6.3 The electric heating power of the heat-conducting oil heater is75kw/piece×2=150kw; two heaters supply heat to the upper and lower rollers respectively.
6.4 Temperature control method: The upper and lower rollers are individually temperature-controlled, and different working temperatures can be set according to the process requirements. The maximum working temperature is 170°C.
6.5 Motor power of heat transfer oil circulating pump: 7.5KW.
6.6 Roll temperature difference: the oil return point temperature difference is ±1℃, the roll surface temperature difference is ±1℃.
6.7 Temperature display: digital temperature display of the oil temperature of the upper and lower rolls.
6.8 The heat transfer oil input method of the roll: The heat transfer oil rotary joint adopts the Chinese brand rotary joint.
6.9 Rotary joint: It is sealed by graphite plane, and is suitable for metal hoses and valves. (The heating pipeline depends on the location of the heater on the customer's site. After placing it next to the machine and confirming it, we will make the pipeline; centralized placement and welding on site by the customer).
7. Hydraulic system:
7.1 Pressing method: Two hydraulic oil cylinders are arranged under the roll, which can control the lower roll to press up.
7.2 Oil cylinder diameter: φ160mm.
7.3 Maximum pressure of hydraulic system pipeline: 8.0MPa.
7.4 Pressure control method: adopt shunt pressure regulation method to control.
7.5 Pressure control accuracy: ±0.15Mpa.
7.6Motor power of hydraulic station: 3KW.
8. Electrical control system:
8.1 Motor speed control mode: adopt Inovance inverter control.
8.2 Local control panel: Inovance touch screen control, Inovance PLC.
8.3 Main electrical components: use Chint contactor.
9. Security protection device:
9.1 Stop / emergency line (exit).
10. Spare parts:
10.1 Installation and maintenance tools: 1 set.
10.2 Sealing ring of oil cylinder: 2 sets.
11. The content that users need to provide or complete by themselves:
11.1 All civil works and equipment installation foundation.
11.2 All the pipe fittings, joints, flanges, heat insulation and heat preservation materials that connect the auxiliary unit and the main engine need to be used in the on-site installation process, as well as the electricity, instrument gas, water or steam supplied by the factory.
11.3 The oil collecting pan at the bottom of the heater unit installation position.
11.4 All the heat conduction oil pipe routes between the heater unit and the main engine are customized by the manufacturer according to the site layout requirements.
11.5 Connect the host, auxiliary units and all on-site control cables and cable trays of the factory system.
11.6 Transport and hoisting equipment at the installation site.
11.7 Installation work and consumable materials (welding rod, cutting gas, etc.).
11.8 The user should be equipped with at least 2 plumbing installers, 2 installation fitters, and 1 electrician to assist in the installation of the equipment.
11.9 The heat transfer oil required for the first operation after the equipment arrives at the site and installed shall be provided by the user.
11.10 The lubricating oil, grease and hydraulic oil needed for the first operation of the equipment shall be provided by the user.